Not showing full model in rendered view and camera view after a certain distance
You probably have two different settings for your view port clipping and your rendering camera clipping.

To check the one in your view port (in Blender 2.8+): press
N , select View and you have Clip Start and Clip
End.
To check the one used by your camera select the camera object, go to
green Object Data Properties and in the panel Lens.

By default, they do not have the same value